These are passing locally but failing in travis. This fixes two possible
timing issues:
- Ensure the signals are set up befor the pidfile is written. The
function that sends the signal waits for the pidfile to exist, so this
ensures we don't miss a signal.
- Wait for the log message indicating that the editor file was read
back, so the test doesn't run through before we get a chance to read
from the editor.
0aefffce4d